There was an article titled “Obama or Emanuel pushed to spotlight Solyndra” in today’s Washington Post, reporting that President Obama or his chief of staff were eager to help spotlight a solar company, Solindra. Eventually, the Department of Energy allowed (or was forced to allow) to pour $535 million in loans to the now shuttered company.

In the article, there was a sentence:

“Any word from OMB?” Department of Energy stimulus adviser Steve Spinner wrote to a department staffer about final terms of the Solyndra loan to be approved by the Office of Management and Budget. “I have the OVP and WH breathing down my neck on this.”

What does “breathe down one’s neck” mean?

Additionally, there was the line;

“Ron said this morning that the POTUS definitely wants to do this,” one White House staffer told an Obama scheduler on Aug. 17, 2009.”

What does “scheduler” mean?

Cambridge Dictionary online defines “scheduler” as “a person who works for a broadcasting company putting the various programmes for the day, week, month, etc. into a particular order.

But I don't think this applies to "Obama scheduler." What is Obama schedulers' job?

The Busy Life of Obama Scheduler Alyssa Mastromonaco
...
In her new role [as director of scheduling and advance], Mastromonaco will execute elaborate protocols that have been in place for decades, and her immediate staff of about 35 will include a "diarist," responsible for recording every one of Obama's moves -- the telephone calls, the meals, the basketball games. Each step in the White House scheduling process, from request to approval, must be documented in writing. Decisions are made by committee -- a very large committee of administrative heavyweights from the national security and domestic policy offices, speechwriting, catering, the first lady's and vice president's shops, the Secret Service and so on. Advance teams involve casts of hundreds, swarming into each of the locales, here and abroad, that a president will visit.

@narx: He could have, but I think as a rule it's considered "bad form" to post lmgtfy answers. Hugo made his point anyway by using the word first for the link. Incidentally, I just cut/pasted/googled OP's exact text What does “breathe down one’s neck” mean, and the first two entries today are for this question itself! But the third one gives a clear definition, though it's a different page to the one Hugo found originally.
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FumbleFingersOct 8 '11 at 13:20

@FumbleFingers I agree lmgtfy is in bad form. I was trying (failing?) to be clever/funny. :)
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narxOct 8 '11 at 18:58

@FumbleFingers My original search was for "breathing down my neck", the text from the quoted article :)
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HugoOct 8 '11 at 19:52

@Hugo. I appreciate your elaborate explanation and narx’s information because I didn’t know Imgfy. I found that Kenkyusha’s (Japanese publisher) Readers English Japanese Dictionary carries “breathe down sb’s neck" as an idiom. I didn’t imagine it has. It provides the following meaning: ①(press) bring a person to bay as an enemy. ②close in on. ③watch a person by sticking around to him (her). ④(work due, closing) press a person. I might be better to have consulted with it before posting. But if I did, I wouldn’t have gotten precious information from you and narx.
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Yoichi Oishi♦Oct 8 '11 at 22:29

@Yoichi Oishi-san, glad you found the information useful. Lmgtfy shows the same results as Google, so you max find it helpful to try Google next time. Good luck!
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HugoOct 9 '11 at 9:39